The old man put his oars (船桨)in the water and _______ the smooth surface of the lake.
----- We haven’t heard from Jane for a long time. ----- What do you suppose ______ to her?
In the USA, he made a lot of friends ______ English well to make himself ______.
Please tell me the way you thought of ______ the garden.
Whom can you trust, if not _______ ?
She reached the top of the hill and stopped ______ on a rock by the side of the path.